Android SecurityException：Permission Denial

问题描述 投票：2回答：4

我的Android应用中存在权限问题：此处为日志。

06-25 17:25:35.862  12039-13799/? E/DatabaseUtils﹕ Writing exception to parcel
java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/images/media from pid=1580, uid=10108 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
        at android.content.ContentProvider.enforceReadPermissionInner(ContentProvider.java:605)
        at android.content.ContentProvider$Transport.enforceReadPermission(ContentProvider.java:480)
        at android.content.ContentProvider$Transport.query(ContentProvider.java:211)
        at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:112)
        at android.os.Binder.execTransact(Binder.java:453)



06-25 17:25:35.870    1580-2997/? E/iu.UploadsManager﹕ Insufficient permissions to access media store
java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/images/media from pid=1580, uid=10108 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
        at android.os.Parcel.readException(Parcel.java:1599)
        at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:183)
        at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:135)
        at android.content.ContentProviderProxy.query(ContentProviderNative.java:421)
        at android.content.ContentResolver.query(ContentResolver.java:498)
        at android.content.ContentResolver.query(ContentResolver.java:441)
        at ifh.i(PG:5904)
        at ifh.h(PG:619)
        at ifh.<init>(PG:187)
        at iel.c(PG:4045)
        at gen_binder.root.RootModule$Generated.a(PG:1131)
        at nmw.e(PG:415)
        at nmw.b(PG:242)
        at nmw.a(PG:207)
        at nmw.a(PG:493)
        at ier.a(PG:2195)
        at ier.onPerformSync(PG:125)
        at android.content.AbstractThreadedSyncAdapter$SyncThread.run(AbstractThreadedSyncAdapter.java:272)


06-25 17:24:37.031    1580-1611/? E/GooglePlusContactsSync﹕ Failed to clear out contacts
java.lang.SecurityException: Permission Denial: opening provider com.android.providers.contacts.ContactsProvider2ForLG from ProcessRecord{9557af9 1580:com.google.android.apps.plus/u0a108} (pid=1580, uid=10108) requires android.permission.READ_CONTACTS or android.permission.WRITE_CONTACTS
        at android.os.Parcel.readException(Parcel.java:1599)
        at android.os.Parcel.readException(Parcel.java:1552)
        at android.app.ActivityManagerProxy.getContentProvider(ActivityManagerNative.java:3652)
        at android.app.ActivityThread.acquireProvider(ActivityThread.java:4866)
        at android.app.ContextImpl$ApplicationContentResolver.acquireUnstableProvider(ContextImpl.java:2020)
        at android.content.ContentResolver.acquireUnstableProvider(ContentResolver.java:1488)
        at android.content.ContentResolver.query(ContentResolver.java:482)
        at android.content.ContentResolver.query(ContentResolver.java:441)
        at dpm.a(PG:397)
        at dpm.b(PG:1345)
        at dpn.run(PG:282)
        at java.lang.Thread.run(Thread.java:818)

我知道这是一个权限问题，我可以用这样的grant权限解决：

// Here, thisActivity is the current activity
if (ContextCompat.checkSelfPermission(thisActivity,
                Manifest.permission.READ_CONTACTS)
        != PackageManager.PERMISSION_GRANTED) {

    // Should we show an explanation?
    if (ActivityCompat.shouldShowRequestPermissionRationale(thisActivity,
            Manifest.permission.READ_CONTACTS)) {

        // Show an expanation to the user *asynchronously* -- don't block
        // this thread waiting for the user's response! After the user
        // sees the explanation, try again to request the permission.

    } else {

        // No explanation needed, we can request the permission.

        ActivityCompat.requestPermissions(thisActivity,
                new String[]{Manifest.permission.READ_CONTACTS},
                MY_PERMISSIONS_REQUEST_READ_CONTACTS);

        // MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
        // app-defined int constant. The callback method gets the
        // result of the request.
    }
}

然后使用它来设置我的提供者的权限：

    @Override
public void onRequestPermissionsResult(int requestCode,
        String permissions[], int[] grantResults) {
    switch (requestCode) {
        case MY_PERMISSIONS_REQUEST_READ_CONTACTS: {
            // If request is cancelled, the result arrays are empty.
            if (grantResults.length > 0
                && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                // permission was granted, yay! Do the
                // contacts-related task you need to do.

            } else {

                // permission denied, boo! Disable the
                // functionality that depends on this permission.
            }
            return;
        }

        // other 'case' lines to check for other
        // permissions this app might request
    }
}

问题是我不知道我的项目的哪个部分我必须提出此权限请求：我使用Auth0 Custom UI autenthication进行登录，Mysqlite作为内部数据库，GoogleCards用于ListView。

你能帮我理解如何授予这种权限拒绝吗？

非常感谢你

android permission-denied
4个回答
1
投票

好吧，我建议使用Ask，它是一个权限助手库。

使用它你不必编写这么多代码，只需要两行代码即可完成。

以下是使用细节。

首先，在build.gradle中编译依赖项：

dependencies {
    compile 'com.vistrav:ask:2.4'
}

然后在OnCreate的活动开始时或任何按钮按下你可以这样请求许可：

Ask.on(this)
    .forPermissions(Manifest.permission.READ_CONTACTS)
    .go();

就是这样。

你可以找到更多信息here。我几乎在所有项目中都使用它，而且简单易行。

0
投票

当然，你必须把它放在任何活动中。您的应用程序运行是否需要此功能？在app开始时询问。如果您的应用程序可以在没有它的情况下工作 - 在不可避免地阅读联系人时询问（在一个视图中

0
投票
    Basically you have to check for these permission just before the code where you want to access the contacts.

    First of all check for the android version,if it is >=23 then

    if (ContextCompat.checkSelfPermission(thisActivity,
                    Manifest.permission.READ_CONTACTS)
            != PackageManager.PERMISSION_GRANTED) {

        // Should we show an explanation?
        if (ActivityCompat.shouldShowRequestPermissionRationale(thisActivity,
                Manifest.permission.READ_CONTACTS)) {

            // Show an expanation to the user *asynchronously* -- don't block
            // this thread waiting for the user's response! After the user
            // sees the explanation, try again to request the permission.

        } else {

            // No explanation needed, we can request the permission.

            ActivityCompat.requestPermissions(thisActivity,
                    new String[]{Manifest.permission.READ_CONTACTS},
                    MY_PERMISSIONS_REQUEST_READ_CONTACTS);

            // MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
            // app-defined int constant. The callback method gets the
            // result of the request.
        }
    }
    else
    {
    // do here contact related work say you wwant to fetch the name and number from contact,you can do that task here.
    }

You have to override this method: 


 @Override
public void onRequestPermissionsResult(int requestCode,
        String permissions[], int[] grantResults) {
    switch (requestCode) {
        case MY_PERMISSIONS_REQUEST_READ_CONTACTS: {
            // If request is cancelled, the result arrays are empty.
            if (grantResults.length > 0
                && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                // permission was granted, yay! Do the
                // contacts-related task you need to do.

            } else {

                // permission denied, boo! Disable the
                // functionality that depends on this permission.
            }
            return;
        }

        // other 'case' lines to check for other
        // permissions this app might request
    }
0
投票

对于低于6.0的Android版本，只需在清单中定义堆栈跟踪（READ_CONTACTS，WRITE_CONTACTS等）中提到的权限即可。

对于Android 6.0及以上版本，您必须要求用户授予权限。理想情况下，应该在绝对必要时执行，例如当用户导航到需要该权限的应用程序部分时。它解释了here。

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